package BC94_N个数之和;

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int sum = 0;
        while (sc.hasNext()){
            sum += sc.nextInt();
        }
        System.out.println(sum);
    }
}
